Optical path control member and display device comprising same

Abstract

An optical path control member according to an embodiment comprises: a base substrate; a resin layer which is disposed on the base substrate and includes multiple intaglio parts spaced apart from each other; and multiple pattern portions arranged inside the multiple intaglio parts and spaced apart from each other, wherein the pitch between the multiple pattern portions is shorter than or equal to 30 μm.

1 . An optical path control member coupled to an other member comprising:
 a base substrate;   a resin layer disposed on the base substrate and including a plurality of intaglio portions spaced from each other; and   a plurality of pattern portions disposed inside the plurality of intaglio portions and spaced from each other,   wherein a pitch of the plurality of pattern portions is smaller than a pitch of a pattern of the other member, and   the pitch of the plurality of pattern portions is 30 μm or less.   
     
     
         2 . The optical path control member of  claim 1 , wherein the pattern portions include a first pattern portion and a second pattern portion, and
 the first pattern portion and the second pattern portion are formed in different shapes.   
     
     
         3 . The optical path control member of  claim 2 , wherein the second pattern portion includes a plurality of short-circuited portions. 
     
     
         4 . The optical path control member of  claim 3 , wherein a width of the short-circuited portion is 1 μm to 50 μm. 
     
     
         5 . The optical path control member of  claim 3 , wherein a ratio of the second pattern portion to the entire pattern portion portions including the first pattern portion and the second pattern portion is greater than a ratio of the first pattern portion to the entire pattern portions. 
     
     
         6 . The optical path control member of  claim 1 , wherein the pattern portions include a first sub pattern portion extending in a first direction and a second sub pattern portion extending in a second direction different from the first direction. 
     
     
         7 . An optical path control member comprising:
 a base substrate comprising a first region and a second region;   a resin layer disposed on the base substrate and including a plurality of intaglio portions spaced apart from each other; and   a plurality of pattern portions disposed in the plurality of intaglio portions and spaced apart from each other,   wherein the first region is defined as an outer region of the base substrate,   the second region is defined as a central region of the base substrate,   the pattern portions include a plurality of first pattern portions disposed on the first region and second pattern portions disposed on the second region, and   a first pitch of the first pattern portions is larger than a second pitch of the second pattern portions.   
     
     
         8 . The optical path control member of  claim 7 , wherein a width of the first pattern portions is larger than a width of the second pattern portions. 
     
     
         9 . The optical path control member of  claim 7 , wherein the first region is defined as a signal region, and
 the second region is defined as a display region of the base substrate.   
     
     
         10 . A display device comprising:
 a display panel; and   an optical path control member disposed on the display panel,   wherein the optical path control member comprises:
 a resin layer disposed on the display panel and including a plurality of intaglio portions spaced apart from each other and a plurality of embossed portions; 
 a plurality of pattern portions disposed in the plurality of intaglio portions and spaced apart from each other; and 
 a base substrate disposed on the resin layer, 
 wherein a pitch of the plurality of pattern portions is 30 μm or less, and 
 a pitch of the pixel pattern is 120 μm to 145 μm. 
   
     
     
         11 . The optical path control member of  claim 1 , wherein the pitch of the pattern of the other member is 100 μm to 150 μm. 
     
     
         12 . The optical path control member of  claim 1 , wherein the other member includes a display panel. 
     
     
         13 . The optical path control member of  claim 1 , wherein a height of the pattern portion is 20 μm to 120 μm. 
     
     
         14 . The optical path control member of  claim 1 , wherein the pattern portions are disposed at a height of 90% or more to less than 100% of the maximum depth of the intaglio portions. 
     
     
         15 . The optical path control member of  claim 3 , wherein the plurality of short-circuited portions have different sizes. 
     
     
         16 . The optical path control member of  claim 1 , wherein a difference between the first pitch and the second pitch is 5 μm to 30 μm. 
     
     
         17 . The optical path control member of  claim 8 , wherein a difference between the width of the first pattern portions and the width of the second pattern portions is 1 μm to 15 μm. 
     
     
         18 . The optical path control member of  claim 2 , wherein a first distance of the first pattern portion is larger than a second distance of the second pattern portion. 
     
     
         19 . The optical path control member of  claim 7 , wherein a density of the pattern portions per unit area in the first region is greater than a density of the pattern portions per unit area in the second region. 
     
     
         20 . The display device of  claim 10 , wherein the display panel and the optical path control member satisfy a value defined by the following equation of less than 2,500: 
       
         
           
             
               
                 
                   
                     λ 
                     = 
                     
                       
                          
                         
                           
                             k 
                             
                               p 
                               1 
                             
                           
                           - 
                           
                             m 
                             
                               p 
                               2 
                             
                           
                         
                          
                       
                       
                         - 
                         1 
                       
                     
                   
                 
                 
                   
                     [ 
                     Equation 
                     ] 
                   
                 
               
             
           
         
         (wherein P 1  is a pitch of the pattern portion of the optical path control member, P 2  is a pitch of the pixel pattern of the display panel, k is a number of pattern portions of the optical path control member, and m is a number of pixel patterns of the display panel).